#!/bin/sh

current_abs=$(brightnessctl get)
current_rel() {
	echo "($(brightnessctl get) + 0.5) / 1" | bc
}
max=$(brightnessctl max)
factor=3
brightness_step=$((max * factor / 100 < 1 ? 1 : max * factor / 100))

case $1 in
# '') ;;
'down')
	# if current value <= 3% and absolute value != 1, set brightness to absolute 1
	if [ "$(current_rel)" -le "$factor" ] && [ "$current_abs" -gt 0 ] && [ "$current_abs" -ne 1 ]; then
		brightnessctl set 1
	else
		brightnessctl set 1%-
	fi
	;;
'up')
	brightnessctl set 1%+
	;;
esac

current_rel
